Students built models cars to race down a ramp. The mass and acceleration of the cars were as show below. CAR
Mass (kg)
Acceleration (m/s2)
1
.5
36
2
.9
55
3
1.0
19
4
1.2
34
Which of the four cars had the least net force applied to it when it was launched down the ramp?
O 1
2
3

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the maximum mass of nh3 is nh3 in grams

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.